<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>index</title>
</head>
<body>
<h1>Hello world</h1>
<form action=" /file/a" method="get">
姓名：<input type="text" name="username"><br/>
性别：<input type="radio" name="gender" value="1">男
     <input type="radio" name="gender" value="0">女<br/>
爱好：<input type="checkbox" name="interest" value="soccer">足球
     <input type="checkbox" name="interest" value="music">音乐
     <input type="checkbox" name="interest" value="sleep">睡觉<br/>
     <input type="submit" value="保存">
     <input type="reset" value="重置">
</form>
</body>
</html>